EP4202897A3 - Method and apparatus for detecting ambient light under display screen, and electronic device - Google Patents
Method and apparatus for detecting ambient light under display screen, and electronic device Download PDFInfo
- Publication number
- EP4202897A3 EP4202897A3 EP22212446.3A EP22212446A EP4202897A3 EP 4202897 A3 EP4202897 A3 EP 4202897A3 EP 22212446 A EP22212446 A EP 22212446A EP 4202897 A3 EP4202897 A3 EP 4202897A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- display screen
- ambient light
- sampling
- electronic device
- period
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title abstract 3
- 238000005070 sampling Methods 0.000 abstract 8
- 238000013480 data collection Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/4204—Photometry, e.g. photographic exposure meter using electric radiation detectors with determination of ambient light
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2007—Display of intermediate tones
- G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0237—Switching ON and OFF the backlight within one frame
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
- G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/57—Control of contrast or brightness
- H04N5/58—Control of contrast or brightness in dependence upon ambient light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Controls And Circuits For Display Device (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111618420.2A CN114333735B (en) | 2021-12-27 | 2021-12-27 | Method and device for detecting ambient light under display screen and electronic equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4202897A2 EP4202897A2 (en) | 2023-06-28 |
EP4202897A3 true EP4202897A3 (en) | 2023-10-11 |
Family
ID=81015256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22212446.3A Pending EP4202897A3 (en) | 2021-12-27 | 2022-12-09 | Method and apparatus for detecting ambient light under display screen, and electronic device |
Country Status (3)
Country | Link |
---|---|
US (1) | US20230204413A1 (en) |
EP (1) | EP4202897A3 (en) |
CN (1) | CN114333735B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115290299B (en) * | 2022-09-30 | 2023-04-07 | 深圳市汇顶科技股份有限公司 | Method and device for determining falling depth of screen light leakage and electronic equipment |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8933916B1 (en) * | 2012-06-26 | 2015-01-13 | Jeffrey B. Doar | Ambient light sensing for display |
US9622326B1 (en) * | 2015-12-18 | 2017-04-11 | Amazon Technologies, Inc. | Method and device for determining emitted light intensity level |
US20210319753A1 (en) * | 2018-08-02 | 2021-10-14 | Ams Ag | Ambient light sensing system |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008096805A (en) * | 2006-10-13 | 2008-04-24 | Matsushita Electric Ind Co Ltd | Projector and projector system |
JP2009058342A (en) * | 2007-08-31 | 2009-03-19 | Seiko Epson Corp | Sensing circuit, photodetection circuit, electro-optical device and electronic device |
JP2013120991A (en) * | 2011-12-06 | 2013-06-17 | Hitachi Consumer Electronics Co Ltd | Image display apparatus |
CN103052218A (en) * | 2012-12-14 | 2013-04-17 | 重庆恒又源科技发展有限公司 | Control method and system of multiple LED (Light Emitting Diode) lamps |
CN107917755A (en) * | 2017-11-22 | 2018-04-17 | 广东欧珀移动通信有限公司 | Environment light detection method, device, storage medium and electronic equipment |
CN107979698B (en) * | 2017-11-22 | 2020-05-12 | Oppo广东移动通信有限公司 | Ambient light intensity detection method and device, storage medium and electronic equipment |
CN112242119A (en) * | 2019-07-16 | 2021-01-19 | 北京小米移动软件有限公司 | Terminal, display parameter control method and device, and storage medium |
CN112710388B (en) * | 2019-10-24 | 2022-07-01 | 北京小米移动软件有限公司 | Ambient light detection method, ambient light detection device, terminal device, and storage medium |
CN113077738B (en) * | 2020-01-03 | 2024-04-09 | 北京小米移动软件有限公司 | Ambient light detection method and device and storage medium |
CN112187391B (en) * | 2020-09-04 | 2022-07-29 | 烽火通信科技股份有限公司 | Oversampling clock data recovery method and system for loop bandwidth dynamic adjustment |
CN112985588A (en) * | 2021-02-05 | 2021-06-18 | 深圳市汇顶科技股份有限公司 | Terminal device, optical signal processing method, and storage medium |
-
2021
- 2021-12-27 CN CN202111618420.2A patent/CN114333735B/en active Active
-
2022
- 2022-12-09 EP EP22212446.3A patent/EP4202897A3/en active Pending
- 2022-12-12 US US18/079,365 patent/US20230204413A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8933916B1 (en) * | 2012-06-26 | 2015-01-13 | Jeffrey B. Doar | Ambient light sensing for display |
US9622326B1 (en) * | 2015-12-18 | 2017-04-11 | Amazon Technologies, Inc. | Method and device for determining emitted light intensity level |
US20210319753A1 (en) * | 2018-08-02 | 2021-10-14 | Ams Ag | Ambient light sensing system |
Also Published As
Publication number | Publication date |
---|---|
EP4202897A2 (en) | 2023-06-28 |
CN114333735A (en) | 2022-04-12 |
US20230204413A1 (en) | 2023-06-29 |
CN114333735B (en) | 2023-07-14 |
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